Vulnerability-Lookup

CNVD-2021-13218

Vulnerability from cnvd - Published: 2021-02-27

Title

Cisco NX-OS拒绝服务漏洞（CNVD-2021-13218）

Description

Cisco NX-OS是适用于Cisco Nexus系列以太网交换机和MDS系列光纤通道存储区域网络交换机的网络操作系统。 Cisco NX-OS的网络栈存在拒绝服务漏洞。该漏洞源于该软件在处理发往受影响设备的某些IPv6数据包时会不正确地释放资源。攻击者可通过将多个特制IPv6数据包发送到受影响的设备利用该漏洞导致网络栈用尽可用缓冲区，从而可导致拒绝服务。

Severity

高

Patch Name

Cisco NX-OS拒绝服务漏洞（CNVD-2021-13218）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipv6-netstack-edXPGV7K

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-1387

Impacted products

Name
Cisco NX-OS

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1387",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1387"
    }
  },
  "description": "Cisco NX-OS\u662f\u9002\u7528\u4e8eCisco Nexus\u7cfb\u5217\u4ee5\u592a\u7f51\u4ea4\u6362\u673a\u548cMDS\u7cfb\u5217\u5149\u7ea4\u901a\u9053\u5b58\u50a8\u533a\u57df\u7f51\u7edc\u4ea4\u6362\u673a\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco NX-OS\u7684\u7f51\u7edc\u6808\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8be5\u8f6f\u4ef6\u5728\u5904\u7406\u53d1\u5f80\u53d7\u5f71\u54cd\u8bbe\u5907\u7684\u67d0\u4e9bIPv6\u6570\u636e\u5305\u65f6\u4f1a\u4e0d\u6b63\u786e\u5730\u91ca\u653e\u8d44\u6e90\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u591a\u4e2a\u7279\u5236IPv6\u6570\u636e\u5305\u53d1\u9001\u5230\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7f51\u7edc\u6808\u7528\u5c3d\u53ef\u7528\u7f13\u51b2\u533a\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipv6-netstack-edXPGV7K",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-13218",
  "openTime": "2021-02-27",
  "patchDescription": "Cisco NX-OS\u662f\u9002\u7528\u4e8eCisco Nexus\u7cfb\u5217\u4ee5\u592a\u7f51\u4ea4\u6362\u673a\u548cMDS\u7cfb\u5217\u5149\u7ea4\u901a\u9053\u5b58\u50a8\u533a\u57df\u7f51\u7edc\u4ea4\u6362\u673a\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco NX-OS\u7684\u7f51\u7edc\u6808\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8be5\u8f6f\u4ef6\u5728\u5904\u7406\u53d1\u5f80\u53d7\u5f71\u54cd\u8bbe\u5907\u7684\u67d0\u4e9bIPv6\u6570\u636e\u5305\u65f6\u4f1a\u4e0d\u6b63\u786e\u5730\u91ca\u653e\u8d44\u6e90\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u591a\u4e2a\u7279\u5236IPv6\u6570\u636e\u5305\u53d1\u9001\u5230\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7f51\u7edc\u6808\u7528\u5c3d\u53ef\u7528\u7f13\u51b2\u533a\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Cisco NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-13218\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco NX-OS"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1387",
  "serverity": "\u9ad8",
  "submitTime": "2021-02-25",
  "title": "Cisco NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-13218\uff09"
}

CVE-2021-1387 (GCVE-0-2021-1387)

Vulnerability from cvelistv5 – Published: 2021-02-24 19:30 – Updated: 2024-11-08 23:37

Title

Cisco NX-OS Software IPv6 Netstack Denial of Service Vulnerability

Summary

A vulnerability in the network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because the software improperly releases resources when it processes certain IPv6 packets that are destined to an affected device. An attacker could exploit this vulnerability by sending multiple crafted IPv6 packets to an affected device. A successful exploit could cause the network stack to run out of available buffers, impairing operations of control plane and management plane protocols and resulting in a DoS condition. Manual intervention would be required to restore normal operations on the affected device. For more information about the impact of this vulnerability, see the Details section of this advisory.

Severity

8.6 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-08 20:03 UTC

CWE

CWE-401

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco NX-OS Software	Affected: n/a

Date Public

2021-02-24 00:00

Show details on NVD website

JSON

To clipboard

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          }
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.